Caveolae (plasmalemmal vesicles) are abundant in pulmonary endothelial cells. What is their likely function?
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Correct answer: To facilitate transcytosis across the endothelium
Caveolae are small indentations in the cell membrane that participate in the transport of macromolecules across the endothelium (transcytosis). They also house many signaling proteins and enzymes like ACE.
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